Hello, I am new to the forums. I just purchased a Tokai TC0-1 Compressor and I needed some help with it. I bought it off the original owner who bought it new in the 80's. It is the black version of the TC0-1 ,anyways when I bought it they guy told me he replaced the original jack since it broke and he glued it in since it was not square like the original jack. I want to replace the jack with an original one, I just don't know what type I need. Is it the same as old MIJ boss pedals? I didn't get the box or manual with it so I have no idea if the centre is negative or positive. Any help would be greatly appreciated.